Boston Acoustics VRS Manuel utilisateur

VRS Micro

Micro Reference Diffuse-Field

Surround Speaker System

Speciﬁcations

Frequency Response (±3dB) 120–20,000Hz

Recommended Ampliﬁer Power 15–100 watts

Nominal Impedance 8 ohms

Sensitivity [1 watt (2.83v) at 1m] 86dB

Full-Range Driver 31⁄2" (89mm) copolymer

High-Frequency Driver 21⁄2" (65mm) polymer-treated paper

Crossover Frequency 350Hz

Dimensions (HxWxD) 75⁄8x 37

⁄8x 53⁄8" (194 x 98 x 137mm)

Weight/each 4 lbs (2kg)

Finish Black or white

Description

The VRS Micro is a diffuse-ﬁeld surround

speaker that provides realistic rear channel

surround effects with Dolby®ProLogic®and

Dolby®Digital decoding electronics.

The VRS Micro cabinet is sculptured to aim

sound along the walls, rather than directly at

the listener, and to blend with the room’s decor.

Frequencies from 120 to 20,000Hz are han-

dled by a specially designed 31⁄2" (89mm) full-

range driver, ﬁring toward the front of the

room. Frequencies above 350Hz are handled

by a 21⁄2" (65mm) high-frequency driver, ﬁring

backward. Gold-plated ﬁve-way binding posts

allow the connection of virtually any speaker

cable. Straightforward mounting of the speak-

er on any wall or ceiling can be easily accom-

plished with the included brackets.

Diffuse Sound

In a movie theater, a diffuse surround sound

ﬁeld is created by using an array of surround

speakers around the sides and rear of the

theater. Since this is not practical in the home,

a diffuse-ﬁeld speaker achieves the same effect

with a single pair of speakers.

When a conventional direct-radiating speaker

is used for surround, sound is aimed directly at

the listener. Because the listener can localize

the sound, the surround effect is dramatically

reduced (above right).

The VRS Micro contains two drivers, operating

with opposite polarities—one speaker pushes

out and the other pulls in. This directs most of

the sound sideways (right). The VRS Micro gen-

erates a “ﬁgure 8” pattern above 350Hz along

the walls of the room. The sound is then reﬂect-

ed from the end walls, ceiling and ﬂoor before

returning to the listener as diffuse sound, which

comes from all around the listener.

Connecting Your VRS Micro Speakers

Connect the speaker’s terminals to those on the ampliﬁer or receiver designated for “surround” or

“rear channel effects.” Maintain consistency of the +(red) and –(black) connections by using the

markings on the wire.

We recommend 18-gauge (or heavier) speaker wire for runs up to 25' (8m), and thicker 16-gauge

speaker wire for longer runs. Strip 1⁄2" (12mm) of insulation from the ends of each wire to expose

the conductors. Tightly twist the wire strands together. Maintain the consistency of the +(red) and

– (black) connections.

IMPORTANT: Typically, one side of the hook-up wire is ribbed and the

other is smooth. Connect the ribbed side to the +(red) terminals and

the smooth side to the –(black) terminals.

WARNING: To prevent electrical shock, always switch off the ampliﬁer

or receiver when making connections to the speaker.

Using the ﬁve-way binding posts: The binding posts permit easy con-

nection to banana plugs, pins, spade lugs and bare wire. The metal sur-

faces are plated with 24K gold to resist corrosion.

Rear channel

Left

Front channel

Right

Center speaker

RightCenterLeft

Left speaker

Receiver or amplifier

Right speaker

Left VRS Micro Right VRS Micro

Room Placement

Room placement is one of the most important factors contributing to the quality of home theater

sound. Take a few minutes to place your speakers correctly to ensure they will sound their best.

If the viewing area is in a corner, the speakers may be

placed to either side on adjacent walls.

One or both of the VRS Micro speakers may be hung from

the ceiling. Make sure the arrow on the rear label points to

the front of the room.

If the listening position is against the wall, place the

speakers to either side, no less than 20" (50cm) from the

rear wall.

Place the VRS Micro speakers on either side of the

listening area.

IMPORTANT: Your speakers have been packed as a LEFT and RIGHT matched set. Make sure that each speaker is mounted

on the correct side, with the larger driver pointing to the front of the theater area. The arrow on the back of each speaker

should point toward the front of the room.

Listening Levels and Power-Handling

IMPORTANT: Adjusting Listening Volume–To obtain the best home theater effect, balance the

sound level of each speaker. Home theater systems contain a test signal that simpliﬁes this proce-

dure. Refer to the instructions provided with your surround sound electronics.

The power recommendation for the speaker assumes the ampliﬁer is not overdriven, which, over a

long period, can damage even our rugged speakers. If you hear a harsh, gritty noise, turn down the

volume control. Prolonged or repeated operation with a distorted signal from the ampliﬁer can

cause damage to the speakers, which is not covered by the warranty.

Setting Up Your Home Theater System

Volume Levels: To obtain the best home theater effect, match the sound levels of each speaker.

Home theater systems include a test signal that simpliﬁes this level matching. Refer to the instruc-

tions provided with your surround sound electronics.

Surround Channel Mode: If your electronics have a surround channel mode, it should be set

to “Normal”or “Small.”This setting will divert any low bass in the surround channels to the

subwoofer.

Wall- or Ceiling-Mounting Your VRS Micro Speakers

The VRS Micro is designed to be mounted directly onto a wall or ceiling. Attach the supplied

bracket to the wall or ceiling and clip the speaker to the bracket.

You may run wires to the speakers on the wall surface or behind the wall. Use the recessed area on

the back of the speaker to accommodate the wire slack.

Mounting on drywall, paneling or other hollow surfaces: Use the 6-32 x 2" machine screws and

toggle wings provided. The toggle wings require a 1⁄2" (12mm) hole.

Mounting on wood and other solid surfaces: Use a #6 or #8 wood screw.

Mounting on masonry, adobe and similar surfaces: Consult a knowledgeable installer about

proper hardware. You will obtain best results with #6 or #8 screws.

IMPORTANT: Your speakers have been packed as a LEFT and RIGHT matched set. Make sure that

each speaker is mounted on the correct side, with the larger driver pointing toward the front of the

theater area. The arrow on the back of each speaker should point toward the front.

Painting Your VRS Micro Speakers

You may paint the surface and grilles of your VRS Micro speakers. You will need:

•A small screwdriver or knife to remove the grilles from the cabinet

•A fast-drying primer, such as Krylon®Sandable Spray Primer #1318

•Masking tape and scrap paper, and a clean dry cloth.

To paint the cabinet:

IMPORTANT: Do not paint the red and black electrical

terminals or the black area behind the grilles.

1. Remove the grilles: Use a small screwdriver or knife to

snap open the back edge of each grille near the terminals.

2. Mask off the baffles with masking tape and scrap paper,

and wipe any dust from the cabinet.

3. Apply two thin coats of primer and let dry thoroughly.

4. Apply ﬁnishing paint and let dry.

5. Remove masking tape and paper.

To paint the grilles:

IMPORTANT: Avoid painting the grilles in a way that caus-

es the holes to be ﬁlled.

1. Remove the grilles: Use a small screwdriver or knife to

snap open the back edge of each grille near the terminals.

2. Paint the grilles: Primer is not required. If using a spray

paint, use two thin coats. If using a house paint, thin the

paint to avoid ﬁlling the perforation holes in the grille. Let

the paint dry completely.

3. Reinsert the grilles: Insert the front edge in the groove

near the logo and then snap the rear of the grille into

place on the cabinet.

29⁄32"

(23mm)

Drill 1⁄2" (12mm) holes

toggle wings

Level bracket

before hanging

speaker

6-32 x 2"

machine screws

(25mm)

Mounting

1. Make two holes using the bracket as a template. If running wires behind the wall, make a hole for

them 1" (25mm) below the bracket (left).

2. Insert the machine screws through the bracket and thread onto the toggle wings before pene-

trating the wall (center).

3. Level the bracket and tighten the screws. Connect the wires and hang the speaker on the bracket,

so the arrow on the label points to the front of the home theater area (right).

Limited Warranty

For ﬁve years from the date of purchase, Boston Acoustics will repair for the original owner any

defect in materials or workmanship that occurs in normal use of the VRS Micro speaker system,

without charge for parts and labor.

Your responsibilities are to use the system according to the instructions supplied, to provide safe

and secure transportation to an authorized Boston Acoustics service representative and to present

proof of purchase in the form of your sales slip when requesting service.

Excluded from this warranty is damage that results from abuse, misuse, accidents, shipping or repairs

or modiﬁcations by anyone other than an authorized Boston Acoustics service representative.

This warranty is void if the serial number has been removed or defaced.

This warranty gives you speciﬁc legal rights, and you may also have other rights which vary from

state to state.

If Service Seems Necessary

First, contact the retailer from whom you purchased the speakers. If that is not possible, write to:

Boston Acoustics, Inc., 300 Jubilee Drive, Peabody, MA 01960.

We will promptly advise you of what action to take. If it is necessary to return your speaker to the

factory, please ship it prepaid. After it has been repaired, we will return it freight prepaid in the U.S.

and Canada.

300 Jubilee Drive

Peabody, MA 01960 U.S.A.

508-538-5000

Boston and Boston Acoustics are registered trademarks

of Boston Acoustics, Inc. Dolby, ProLogic, and Dolby

Digital are registered trademarks of Dolby Laboratories

Licensing Corporation.

Speciﬁcations subject to change without notice.

42-648-0

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